.div_top {
    margin-bottom: 10px;
}

.div_header {
    background-color: #dddddd;
    padding: 5px;
}

.div_content {
    background-color: #dddddd;
    padding: 5px;
}

.div_links {
    background-color: #dddddd;
    padding: 5px;
    float: left;
}
